Display Panel and Manufacturing Method Therefor, and Display Apparatus

Abstract

A display panel includes a base substrate, a light-emitting unit located on a side of the base substrate, a first light blocking portion located on a side of the light-emitting unit away from the base substrate, and at least one light shielding portion located at least on a side of the first light blocking portion away from the base substrate. The base substrate includes light emission regions and a non-light emission region. The light-emitting unit includes a plurality of first light-emitting devices and a plurality of second light-emitting devices located in the light emission regions. The first light blocking portion is arranged in the non-light emission region in a direction substantially parallel to the base substrate. A light shielding portion is disposed at least between a first light-emitting device and a second light-emitting device and extends in the non-light emission region in a direction substantially perpendicular to the base substrate.

1 . A display panel, comprising:
 a base substrate including light emission regions and a non-light emission region;   a light-emitting unit located on a side of the base substrate, wherein the light-emitting unit includes a plurality of first light-emitting devices and a plurality of second light-emitting devices that are located in the light emission regions;   a first light blocking portion located on a side of the light-emitting unit away from the base substrate and arranged in the non-light emission region in a first direction, wherein the first direction is a direction substantially parallel to the base substrate; and   least one light shielding portion located at least on a side of the first light blocking portion away from the base substrate, wherein a light shielding portion of the at least one light shielding portion is disposed at least between a first light-emitting device of the plurality of first light-emitting devices and a second light-emitting device of the plurality of second light-emitting devices and extends in the non-light emission region in a second direction; the second direction is a direction substantially perpendicular to the base substrate.   
     
     
         2 . The display panel according to  claim 1 , wherein the light shielding portion is disposed at least between the first light-emitting device and the second light-emitting device that are of a same color and adjacent to each other. 
     
     
         3 . The display panel according to  claim 1 , wherein the at least one light shielding portion includes a plurality of light shielding portions, and the plurality of light shielding portions include a first light shielding portion and a second light shielding portion that are respectively located on two sides of the second light-emitting device;
 the first light shielding portion is disposed between a first light-emitting device and a second light-emitting device that are of a same color and adjacent to each other, and the second light shielding portion is disposed between another first light-emitting device and the second light-emitting device that are of different colors and adjacent to each other.   
     
     
         4 . The display panel according to  claim 1 , wherein a light shielding portion of the at least one light shielding portion includes a plurality of light shielding sub-portions; the plurality of light shielding sub-portions are sequentially arranged in the second direction at intervals. 
     
     
         5 . The display panel according to  claim 4 , wherein in the second direction, a distance between two adjacent light shielding sub-portions is greater than or equal to 1.5 μm and less than or equal to 15 μm. 
     
     
         6 . The display panel according to  claim 1 , wherein in the first direction, a distance between the light shielding portion and a sidewall of the second light-emitting device adjacent to the light shielding portion is less than or equal to 5 μm. 
     
     
         7 . The display panel according to  claim 1 , wherein an extension direction of the light shielding portion is substantially parallel to an edge of the second light-emitting device, and an extension length of the light shielding portion is greater than or equal to a length of the edge of the second light-emitting device. 
     
     
         8 . The display panel according to  claim 1 , wherein a light shielding portion of the at least one light shielding portion is disposed between multiple first light-emitting devices of the plurality of first light-emitting devices and multiple second light-emitting devices of the plurality of second light-emitting devices;
 wherein the multiple first light-emitting devices are located on a side of the light shielding portion, and the multiple second light-emitting devices are located on another side of the light shielding portion.   
     
     
         9 . The display panel according to  claim 1 , wherein a light shielding portion of the at least one light shielding portion extends in the second direction toward a side of the first light blocking portion proximate to the base substrate. 
     
     
         10 . The display panel according to  claim 1 , further comprising:
 a second light blocking portion located on the side of the first light blocking portion away from the base substrate, wherein an orthographic projection of the second light blocking portion on the base substrate abuts an orthographic projection of the light shielding portion on the base substrate.   
     
     
         11 . The display panel according to  claim 10 , wherein the second light blocking portion is disposed on a side of the second light-emitting device in the first direction, and a light shielding portion of the at least one light shielding portion is disposed on another side of the same second light-emitting device in the first direction. 
     
     
         12 . The display panel according to  claim 10 , wherein the orthographic projection of the second light blocking portion on the base substrate partially overlaps with an orthographic projection of the second light-emitting device adjacent to the second light blocking portion on the base substrate; and
 an orthographic projection of a portion of the first light blocking portion that is located in a same portion of the non-light emission region as the second light blocking portion is non-overlapping with the orthographic projection of the same second light-emitting device on the base substrate.   
     
     
         13 . The display panel according to  claim 1 , further comprising:
 color filters located on the side of the light-emitting unit away from the base substrate, wherein the color filters include a first color filter and a second color filter; the first color filter covers the first light-emitting device, and the second color filter covers the second light-emitting device; in the first direction, a dimension of the first color filter is greater than a dimension of the first light-emitting device, and a dimension of the second color filter is greater than a dimension of the second light-emitting device.   
     
     
         14 . A manufacturing method for a display panel, comprising:
 providing a base substrate, wherein light emission regions and a non-light emission region are defined on the base substrate;   forming a light-emitting unit on a side of the base substrate, wherein the light-emitting unit includes a plurality of first light-emitting devices and a plurality of second light-emitting devices located in the light emission regions;   forming a first light blocking portion on a side of the light-emitting unit away from the base substrate, wherein the first light blocking portion is arranged in the non-light emission region in a first direction; the first direction is a direction parallel to the base substrate; and   forming at least one light shielding portion on a side of the first light blocking portion away from the base substrate, wherein a light shielding portion of the at least one light shielding portion is disposed at least between a first light-emitting device of the plurality of first light-emitting devices and a second light-emitting device of the plurality of second light-emitting devices and extends in the non-light emission region in a second direction; the second direction is a direction perpendicular to the base substrate.   
     
     
         15 . The manufacturing method for the display panel according to  claim 14 , wherein after forming the light-emitting unit on the side of the base substrate and before forming the first light blocking portion on the side of the light-emitting unit away from the base substrate, the manufacturing method further comprises:
 forming a portion of the light shielding portion on a side of the base substrate proximate to the light-emitting unit, wherein   forming the at least one light shielding portion on the side of the first light blocking portion away from the base substrate includes: forming another portion of the light shielding portion on the side of the first light blocking portion away from the base substrate.   
     
     
         16 . The manufacturing method for the display panel according to  claim 14 , wherein forming the light shielding portion on the side of the first light blocking portion away from the base substrate includes:
 forming a planarization layer on a side of the first light blocking portion away from the base substrate;   forming at least one first through hole extending in the second direction in the planarization layer, wherein a first through hole of the at least one first through hole is disposed at least between the first light-emitting device and the second light-emitting device; and   forming a light shielding portion in the first through hole.   
     
     
         17 . The manufacturing method for the display panel according to  claim 14 , wherein forming the light shielding portion on the side of the first light blocking portion away from the base substrate includes:
 forming a light shielding sub-portion on the side of the first light blocking portion away from the base substrate; and   repeatedly performing the step of forming a light shielding sub-portion on the side of the first light blocking portion away from the base substrate such that a plurality of light shielding sub-portions together constitute the light shielding portion, wherein the plurality of light shielding sub-portions are sequentially stacked in the second direction.   
     
     
         18 . The manufacturing method for the display panel according to  claim 14 , wherein forming the light shielding portion on the side of the first light blocking portion away from the base substrate includes:
 forming a light shielding sub-portion on the side of the first light blocking portion away from the base substrate;   forming a planarization sub-layer on a side of the light shielding sub-portion away from the base substrate; and   repeatedly performing the two steps of forming a light shielding sub-portion on the side of the first light blocking portion away from the base substrate and forming a planarization sub-layer on the side of the light shielding sub-portion away from the base substrate in sequence such that a plurality of light shielding sub-portions and a plurality of planarization sub-layers are alternately arranged in the second direction, wherein the plurality of light shielding sub-portion together constitute the light shielding portion.   
     
     
         19 . A display apparatus, comprising:
 a circuit board; and   the display panel according to  claim 1 , wherein the display panel is located on a side of the circuit board and coupled to the circuit board.   
     
     
         20 . The display panel according to  claim 1 , further comprising:
 a pixel defining layer located on a side of the base substrate proximate to the light-emitting unit; wherein the pixel defining layer includes a plurality of light emission openings, the plurality of first light-emitting devices and the plurality of second light-emitting devices cover the plurality of light emission openings, and a material of the pixel defining layer is a black light-blocking material.